import turtle

turtle.setup(500, 500, 0, 0)

turtle.pensize(3)

turtle.forward(100)
turtle.left(90)
turtle.forward(100)
turtle.right(90)
turtle.forward(100)

turtle.penup()

turtle.right(90)
turtle.forward(200)
turtle.pendown()

# turtle.backward(100)
turtle.forward(-100)

turtle.mainloop()